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WO2021022583A1 - Panneau d'affichage souple - Google Patents

Panneau d'affichage souple Download PDF

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Publication number
WO2021022583A1
WO2021022583A1 PCT/CN2019/101481 CN2019101481W WO2021022583A1 WO 2021022583 A1 WO2021022583 A1 WO 2021022583A1 CN 2019101481 W CN2019101481 W CN 2019101481W WO 2021022583 A1 WO2021022583 A1 WO 2021022583A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
display panel
flexible display
adjustment pattern
bending area
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/101481
Other languages
English (en)
Chinese (zh)
Inventor
文松贤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US16/619,098 priority Critical patent/US20210336166A1/en
Publication of WO2021022583A1 publication Critical patent/WO2021022583A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/124—Insulating layers formed between TFT elements and OLED elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H10K59/1315—Interconnections, e.g. wiring lines or terminals comprising structures specially adapted for lowering the resistance
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H10K59/8051—Anodes
    • H10K59/80515—Anodes characterised by their shape
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • the present invention relates to the field of display technology, in particular to a flexible display panel.
  • OLED Organic Light-Emitting Diode
  • Narrow border or even borderless display devices are the mainstream development trend of current display technology.
  • flexible display products since flexible display products are made on a flexible carrier that can be bent, it is necessary to manufacture narrow border devices.
  • the edge of the device is bent to realize the narrow frame design of the binding area, and the bending radius is very small.
  • a bending area appears between the binding area and the display area.
  • Area, BA) the binding area and the display area are connected by setting a plurality of metal lead wires that penetrate the bending area for signal transmission.
  • the bending area of the existing flexible display panel includes a polyimide (PI) flexible substrate 10, an interlayer insulation layer (ILD) 20 provided on the flexible substrate 10, and an interlayer insulation layer (ILD) 20 provided between the layers.
  • the metal traces 30 arranged on the same layer as the source and drain (SD) on the insulating layer 20, the flat layer (PLN) 40 arranged on the interlayer insulating layer 20 and the metal traces 30, and the pixel definitions arranged on the flat layer 40 Layer (PDL) 50.
  • the neutral layer is usually located in the flexible substrate 10, and the metal traces 30 distributed in the bending area will cause stress and strain due to bending.
  • undesirable phenomena such as breaks and cracks may occur, which may affect signal transmission, the performance of the display screen, and even cause display failure of the display screen.
  • the industry usually uses UV glue to protect the metal traces in the bending area. This method helps to reduce the tensile stress of the metal traces in the bending area, but the effect is limited. In the current structure, the metal traces The tensile stress is still at a relatively high level.
  • the purpose of the present invention is to provide a flexible display panel that uses an anode layer to form a stress adjustment pattern in the bending area to adjust the neutral axis and disperse the stress, so that when the flexible display panel is bent, the neutral surface falls into the metal
  • the layer where the trace is located or close to the metal trace reduces the tensile stress of the metal trace, thereby reducing the risk of breaking the metal trace, and improving the bending resistance and reliability of the product.
  • the present invention provides a flexible display panel, including a flexible substrate, and a TFT layer, a flat layer, and an OLED layer sequentially arranged on the flexible substrate from bottom to top;
  • the TFT layer includes an interlayer insulating layer provided on the flexible substrate and a source and drain metal layer provided on the interlayer insulating layer;
  • the OLED layer includes an anode layer provided on the flat layer;
  • the flexible display panel has a display area and a bending area on one side of the display area;
  • the source and drain metal layers include metal traces passing through the bending area
  • the anode layer is provided with a stress adjustment pattern in the bending area.
  • the stress adjustment pattern has a whole surface structure in the bending area.
  • the stress adjustment pattern is a grid structure.
  • the stress adjustment pattern is a strip shape parallel to the metal trace.
  • the stress adjustment pattern has a strip shape perpendicular to the metal trace.
  • the interlayer insulating layer is provided with a deep hole in the bending area
  • the deep hole is filled with organic photoresist blocks.
  • the OLED layer further includes a pixel definition layer provided on the flat layer and anode layer, an organic light emitting layer provided on the anode layer and surrounded by the pixel definition layer, and an organic light emitting layer provided on the pixel definition layer and the organic light emitting layer On the cathode layer.
  • the TFT layer further includes a gate metal layer and an active layer stacked on the source and drain metal layers.
  • the anode layer is provided with an anode spaced apart from the stress adjustment pattern in the display area.
  • the flexible substrate is a polyimide flexible substrate.
  • the flexible display panel of the present invention includes a flexible substrate, a TFT layer, a flat layer and an OLED layer.
  • the anode layer of the OLED layer is provided with a stress adjustment pattern in the bending area; compared with the prior art The anode layer in the bending area is all etched away.
  • the present invention uses the anode layer to form a stress adjustment pattern in the bending area, and adjusts the neutral axis through the stress adjustment pattern, so that when the flexible display panel is bent, the neutral surface Falling into the layer where the metal trace is located or close to the metal trace, and at the same time, through the support of the stress adjustment pattern, the tensile stress in the bending area is dispersed and evened, and the tensile stress on the metal trace is reduced. Thereby reducing the risk of metal wire breakage, and improving the bending resistance and reliability of the product.
  • FIG. 1 is a schematic cross-sectional structure diagram of a conventional flexible display panel in a bending area along a bending direction, that is, a direction in which metal traces extend;
  • FIG. 2 is a schematic cross-sectional structure diagram of the flexible display panel in FIG. 1 in a bending area along a direction perpendicular to the extension direction of the metal trace;
  • FIG. 3 is a schematic cross-sectional structure diagram of the flexible display panel of the present invention in the bending area;
  • FIG. 4 is a schematic diagram of the cross-sectional structure of the flexible display panel in the display area of the present invention.
  • FIG. 5 is a schematic top view of the metal traces and stress adjustment patterns of the flexible display panel of the present invention.
  • the present invention provides a flexible display panel, which includes a flexible substrate 1 and a TFT layer 2, a flat layer 3, and an OLED layer 4 sequentially disposed on the flexible substrate 1 from bottom to top.
  • the TFT layer 2 includes an interlayer insulating layer 5 provided on the flexible substrate 1, a source/drain metal layer 6 provided on the interlayer insulating layer 5, and a source/drain metal layer 6 laminated
  • the gate metal layer 21 and the active layer 22 are provided and separated from the source and drain metal layer 6 by the interlayer insulating layer 5.
  • the OLED layer 4 includes an anode layer 7 arranged on the flat layer 3, a pixel definition layer 8 arranged on the flat layer 3 and the anode layer 7, and a pixel definition layer 8 arranged on the anode layer 7
  • the organic light emitting layer 85 surrounded by the pixel defining layer 8 and the cathode layer 9 provided on the pixel defining layer 8 and the organic light emitting layer 85.
  • the flexible display panel has a display area 80, a binding area located outside the display area 80, and a bending area 90 located between the display area 80 and the binding area.
  • the back of the flexible substrate 1 is further provided with a supporting plate 50 for supporting and protecting the flexible substrate 10, and the material of the supporting plate 50 is polyethylene terephthalate (PET).
  • PET polyethylene terephthalate
  • the supporting plate 50 is provided with a groove corresponding to the bending area 90 to facilitate bending of the flexible display panel in the bending area 90.
  • the source and drain metal layer 6 includes a source and drain 66 located in the display area 80 and a metal wiring 65 passing through the bending area 90.
  • the anode layer 7 includes an anode 76 located in the display area 80 and a stress adjustment pattern 75 arranged in the bending area 90 spaced apart from the anode 76, so that the stress adjustment pattern 75 acts as neutral.
  • the role of axis adjustment and support makes the neutral surface of the flexible display panel fall into the layer of the metal trace or close to the metal trace when the flexible display panel is bent, reducing the tensile stress of the metal trace, thereby reducing the risk of breaking the metal trace , Improve the bending resistance and reliability of the product.
  • the stress adjustment pattern 75 in the bending area 90 may be a whole surface structure, or may be a grid structure as shown in FIG. 5, or may be a strip parallel or perpendicular to the metal trace 65. shape.
  • the anode layer 7 located in the bending region 90 is etched into the stress adjustment pattern 75 through an exposure and development process.
  • the interlayer insulating layer 5 is provided with a deep hole 55 in the bending area 90; the deep hole 55 is filled with an organic photoresist block 57, which can play a role of stress buffer and further reduce metal Risk of wire breakage.
  • the flexible substrate 1 is a polyimide flexible substrate.
  • the anode layer 7 is used to form a stress adjustment pattern 75 in the bending area 90, and the neutral axis is adjusted by the stress adjustment pattern 75, so that when the flexible display panel is bent, the neutral surface falls into
  • the metal trace 65 is in the layer or close to the metal trace 65, and at the same time, the tensile stress in the bending area 90 is dispersed and uniformed by the support of the stress adjustment pattern 75, and the tension on the metal trace 65 is reduced. Tensile stress, thereby reducing the risk of metal trace 65 breaking, and improving the bending resistance and reliability of the product.
  • the flexible display panel of the present invention includes a flexible substrate, a TFT layer, a flat layer and an OLED layer.
  • the anode layer of the OLED layer is provided with a stress adjustment pattern in the bending area;
  • the anode layer in the bending area is all etched away.
  • the present invention uses the anode layer to form a stress adjustment pattern in the bending area, and adjusts the neutral axis through the stress adjustment pattern, so that when the flexible display panel is bent, the neutral surface falls Into the layer where the metal trace is located or close to the metal trace, and at the same time, through the support of the stress adjustment pattern, the tensile stress in the bending area is dispersed and uniformized, and the tensile stress on the metal trace is reduced, thereby Reduce the risk of metal wire breakage, and improve the bending resistance and reliability of the product.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

La présente invention concerne un panneau d'affichage souple, comprenant un substrat souple (1), une couche TFT (2), une couche plate (3) et une couche DELO (4). Une couche d'anode (7) de la couche DELO (4) est pourvue d'un motif de réglage de contrainte (75) dans une zone de courbure (90). Par rapport à l'élimination de la totalité de la couche d'anode dans la zone de courbure, par gravure en l'état de la technique, dans le présent panneau d'affichage souple, l'axe neutre est ajusté au moyen du motif de réglage de contrainte (75), de sorte que, lorsque le panneau d'affichage souple est plié, le plan neutre tombe dans la couche où se situe le câblage métallique (65) ou soit proche du câblage métallique (65) ; de plus, l'effet de support du motif de réglage de contrainte (75) permet de disperser et d'homogénéiser la contrainte de traction dans la zone de courbure (90) pour réduire la contrainte de traction sur le câblage métallique (65), de sorte que le risque de rupture du câblage métallique (65) soit réduit, ce qui permet d'améliorer la résistance à la courbure et la fiabilité de produits.
PCT/CN2019/101481 2019-08-06 2019-08-20 Panneau d'affichage souple Ceased WO2021022583A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/619,098 US20210336166A1 (en) 2019-08-06 2019-08-20 Flexible display panel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910722801.1A CN110571239A (zh) 2019-08-06 2019-08-06 柔性显示面板
CN201910722801.1 2019-08-06

Publications (1)

Publication Number Publication Date
WO2021022583A1 true WO2021022583A1 (fr) 2021-02-11

Family

ID=68774690

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/101481 Ceased WO2021022583A1 (fr) 2019-08-06 2019-08-20 Panneau d'affichage souple

Country Status (3)

Country Link
US (1) US20210336166A1 (fr)
CN (1) CN110571239A (fr)
WO (1) WO2021022583A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114596779A (zh) * 2022-03-07 2022-06-07 武汉华星光电半导体显示技术有限公司 显示面板及显示终端

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* Cited by examiner, † Cited by third party
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CN111081148B (zh) * 2019-12-25 2021-12-14 霸州市云谷电子科技有限公司 显示面板及显示装置
CN113206124A (zh) * 2020-02-03 2021-08-03 京东方科技集团股份有限公司 显示面板及显示装置
CN113363264B (zh) * 2020-03-05 2024-05-17 京东方科技集团股份有限公司 一种阵列基板及其制备方法和显示装置
CN111552405A (zh) * 2020-04-26 2020-08-18 业成科技（成都）有限公司 触控面板及微发光二极管显示模组的制备方法
CN112614873A (zh) * 2020-12-14 2021-04-06 深圳市华星光电半导体显示技术有限公司 显示面板
CN112928071B (zh) * 2021-02-21 2024-03-05 武汉华星光电半导体显示技术有限公司 Oled显示面板及其制备方法
US12199103B2 (en) 2021-04-29 2025-01-14 Chengdu Boe Optoelectronics Technology Co., Ltd. Display panel
CN113920873B (zh) * 2021-10-13 2023-06-02 武汉天马微电子有限公司 显示面板及显示装置
CN114141141B (zh) * 2021-11-08 2023-05-16 荣耀终端有限公司 一种显示面板及电子设备
CN114049846A (zh) * 2021-11-19 2022-02-15 武汉华星光电半导体显示技术有限公司 一种支撑构件及显示装置
CN114300511A (zh) * 2021-12-01 2022-04-08 合肥维信诺科技有限公司 显示模组及显示设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017057227A1 (fr) * 2015-10-01 2017-04-06 シャープ株式会社 Dispositif électroluminescent et son procédé de fabrication
US20170179432A1 (en) * 2015-12-18 2017-06-22 Apple Inc. Organic Light-Emitting Diode Displays with Reduced Border Area
CN107068695A (zh) * 2017-05-02 2017-08-18 京东方科技集团股份有限公司 一种柔性显示面板及其制备方法、柔性显示装置
CN107706220A (zh) * 2017-09-28 2018-02-16 上海天马微电子有限公司 柔性显示面板及其制作方法和显示装置
CN109659320A (zh) * 2018-12-14 2019-04-19 武汉华星光电半导体显示技术有限公司 阵列基板及具有该阵列基板的显示装置
CN109712536A (zh) * 2019-02-28 2019-05-03 武汉华星光电半导体显示技术有限公司 一种显示面板及显示装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107634086B (zh) * 2017-09-15 2020-03-03 京东方科技集团股份有限公司 一种柔性阵列基板及制备方法、显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017057227A1 (fr) * 2015-10-01 2017-04-06 シャープ株式会社 Dispositif électroluminescent et son procédé de fabrication
US20170179432A1 (en) * 2015-12-18 2017-06-22 Apple Inc. Organic Light-Emitting Diode Displays with Reduced Border Area
CN107068695A (zh) * 2017-05-02 2017-08-18 京东方科技集团股份有限公司 一种柔性显示面板及其制备方法、柔性显示装置
CN107706220A (zh) * 2017-09-28 2018-02-16 上海天马微电子有限公司 柔性显示面板及其制作方法和显示装置
CN109659320A (zh) * 2018-12-14 2019-04-19 武汉华星光电半导体显示技术有限公司 阵列基板及具有该阵列基板的显示装置
CN109712536A (zh) * 2019-02-28 2019-05-03 武汉华星光电半导体显示技术有限公司 一种显示面板及显示装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114596779A (zh) * 2022-03-07 2022-06-07 武汉华星光电半导体显示技术有限公司 显示面板及显示终端
CN114596779B (zh) * 2022-03-07 2024-01-30 武汉华星光电半导体显示技术有限公司 显示面板及显示终端

Also Published As

Publication number Publication date
US20210336166A1 (en) 2021-10-28
CN110571239A (zh) 2019-12-13

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